[Insight-users] GDCMImageIO vs. DicomImageIO when reading HeaderEntry 6000|3000

[Jesús Spí­nola]

Hi,

I am also interested in the possibility of loading DICOM overlays with
itk::GDCMImageIO. Is it possible to get the Overlay data in an itk::Image
object?

On Mon, Aug 10, 2009 at 7:10 AM, Robert Haase <robert_haase at gmx.de> wrote:

> Hi again,
>
> the hint was good, but it didn't work. But that's because my first analysis
> of the problem was wrong: The data-item 6000|3000 which I would like to read
> has beginning zero-bytes  ('\0') which terminate the string. So the DicomIO
> thinks that field is empty. Any idea how to bypass that? Is it possible to
> read binary-data out of an MetaDataDictionaryItem?
>
> Thanks,
> Robert
>
>
> I believe this is due to a 'feature' in itk::GDCMImageIO, see
> documentation:
>
>  *           -  Some very long (>0xfff) binary fields are not loaded
> (typically 0029|0010),
>  *              you need to explicitely set the maximum length of
> elements to load to be bigger
>  *              (see Get/SetMaxSizeLoadEntry)
>
> Let us know if this fixes your issue.
>
> Thanks,
>
> On Fri, Aug 7, 2009 at 11:03 AM, Robert Haase<robert_haase at gmx.de> wrote:
> > > Dear ITK Users,
> > >
> > > I'm trying to read out DICOM-Header-Entries to draw Overlay-Objects
> above
> > > CT Images. When I use GDCMImageIO the MetaDataDictionary does not
> contain
> > > entry 6000|3000 (Overlay Data). When I use DicomImageIO the
> > > MetaDataDictionary contains my entry of interest but it displays an
> ugly
> > > error message telling me, I should use GDCMImageIO.
> > >
> > > Is there a possibility to read out 6000|3000 using GDCMImageIO? Or is
> > > there another way to get the Overlay data?
> > >
> > > Thanks a lot in advance,
> > > Robert
> > >
> > > --
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>
>
>
> -- Mathieu http://mathieumalaterre.com
> --
> GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
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-- 
Jesús Spínola
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